Updated CMB and x- and γ-ray constraints on Majoron dark matter

Abstract

The Majoron provides an attractive dark matter candidate, directly associated with the mechanism responsible for spontaneous neutrino mass generation within the standard model SU(3)c⊠- SU(2)L⊠- U(1)Y framework. Here we update the cosmological and astrophysical constraints on Majoron dark matter coming from the cosmic microwave background and a variety of x- and γ-ray observations. © 2013 American Physical Society.